Accuracy of digital reconstruction of the cerebral vasculature from clinical CT angiography.

Vascular diameters of ICA, ACA, and MCA were determined from CTAs (A) and from corresponding digital subtraction angiographies (B). (C) Mean diameters measured from digitally reconstructed CTAs (white) and from angiographies (black). (D) Correlation of vessel diameters determined from digitally reconstructed CTAs and angiographies.